Patents by Inventor Mark Mercado

Mark Mercado has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Magnetic recording disk with antiferromagnetically coupled master layer including copper
    Patent number: 7419730
    Abstract: An antiferromagnetically coupled (AFC) magnetic recording medium with an AFC master layer comprising at least two magnetic layers with the top magnetic layer including copper is described. The slave layer is separated from the master layer structure by a nonmagnetic spacer layer selected to antiferromagnetically couple the layers. The master layer structure according to the invention includes a bottom and top layer of distinct ferromagnetic materials. Preferably, the top layer of the master layer is a cobalt alloy including from 1 to 5 at. % copper with an example being CoPt13Cr20B8Cu2. The AFC magnetic layer structure can be used with a variety of substrates including circumferentially textured glass and NiP/AlMg.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: September 2, 2008
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Xiaoping Bian, Mary Frances Doerner, Tetsuya Kanbe, Mark Mercado, Mohammad Mirzamaani, Adam Polcyn, Kai Tang
  • Magnetic recording disk with antiferromagnetically coupled master layer including copper
    Publication number: 20060046102
    Abstract: An antiferromagnetically coupled (AFC) magnetic recording medium with an AFC master layer comprising at least two magnetic layers with the top magnetic layer including copper is described. The slave layer is separated from the master layer structure by a nonmagnetic spacer layer selected to antiferromagnetically couple the layers. The master layer structure according to the invention includes a bottom and top layer of distinct ferromagnetic materials. Preferably, the top layer of the master layer is a cobalt alloy including from 1 to 5 at. % copper with an example being CoPt13Cr20B8Cu2. The AFC magnetic layer structure can be used with a variety of substrates including circumferentially textured glass and NiP/AlMg.
    Type: Application
    Filed: August 31, 2004
    Publication date: March 2, 2006
    Inventors: Xiaoping Bian, Mary Doerner, Tetsuya Kanbe, Mark Mercado, Mohammad Mirzamaani, Adam Polcyn, Kai Tang